According to Google data, after seeing an ad on their smartphone, more than half of people:

do a mobile search

go to a store and buy the product

go to the company’s website and buy the product

send a text

The correct answer is:

do a mobile search

Explanation: It’s not just about seeing the ad. But even if people want to know, do, go or buy, they turn to their smart phone. It is officially confirmed that there are more searches on mobile than desktop.